Tonight I patterned another shell through the left barrel of the Remington 1900 with .024 of choke. It was the exact same reload that produced the 88% pattern a couple of weeks ago only this time all the wad petals were cut off and a 20ga .070 nitro card on top of the plastic wad to get the proper crimp. This time the gun produced a 71.1% pattern at 40 yards. A 17% decrease without a shotcup. So it would seem the petals of a shot cup make a pretty big difference in performance. I remain surprised that it still shot an honest full choke pattern with only .024 constriction. My two Remingtons still shot tighter than any of the Parkers I have tested but I was curious about how much difference a shot cup would make.
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